Vitch-koka



UNTTnn STATES PATENT @Erica KOSTA R. MILOVANOVITCH-KOKA, OF VIENNA, AUSTRIA-HUNGARY.

FIRE-ARM.

SPECIFICATION forming part of Letters Patent No. 413,079, dated -October 1'5, 1889.

Application iiled April 24, 1889. Serial No. 808,400. (No model.) Patented in France April 2, 1889, No. 197,150 y i111 Belgium AprilZ, 1889, No. 85,659,2.nd in Switzerland April Z, 1889, No. 801.

To all whom, it may concern:

Be it known that I, Kosrn R. MILovAN-o- VITCH-KOKA, colonel and military attach of the King of Servia, a subject ofthe King of Servia, residing at Vienna, in the Province of Lower Austria, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in Fire-Arms, (for which I have obtained Letters Patent in France, dated April 2, 1889, No. 197,150; in Belgium, dated April 2, 1889, No. 85,659, and in Switzerland, dated April 2, 1889, No. 801;) and Ido hereby declare the following to be a full, clear, and eX- actdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or iigures of reference marked thereon, which form a part ot' this specication.

The invention relates to breech-loading guns, and has for its object to provide means whereby bolt-guns, in which' a' partial rotation of the breech-bolt is necessary for closing and uncoveringor opening the breech, may be converted int-o straight-pull guns and the gun automatically discharged, if so desired.

To these ends the invention consists in structural features and combinations of parts, substantially as hereinafter fully described, and as set forth in the claims.

In the accompanying drawings, Figure 1 isv lan View of the breech mechanism showingthe breech and receiver open or uncovered. Fig. 3 is a sectional elevation of the tubular breeclvbolt pull and push bar and of the breech-bolt. Fig. et is a view similar to Fig. 2, showing the receiver and breech closed for firing.

I have in the above drawings, as an example, illustrated my inventic-n in its application to the Berdan system of breech-loaders.

S indicates the stock of the gun; B', the barrel; B2, the breech-chamber; D, the trigger; E, the sear; S', the rearspring and A the breech-bolt, which latter is contained in part within a tubular puli-bar B, provided with a handle b', and within said breech-bolt is contained the firing-pin C and its actuating-spring c, the rear end of the firing-pin being secured to the tubular straight pullbar B.

As more plainly shown in Fig. 3, the breechbolt A has a longitudinal slot a, the rear end of which is contracted, the contracted portion forming an inclined shoulder a', into which slot projects the end of a stud, pin, or screw l), secured to the pull-bar. The said pull-bar B is further provided with a fullcock notch d, with which engages the nose e of the scar E, Fig. 1.

The breech-bolt A is provided with the usual locking rib or piece A', and to the forward end of the tubular pull B is secured an arm b2, the end of which is curved laterally to form the inclined face b3. Then the breech is closed, as in Fig. 4L, and the pul1 bar B pulled back against the stress ot' the spring c, the arm b2 is withdrawn from the side of the locking-piece A, while the pin, stud, or screw b travels along the slot a. As soon as the arrn b2 has been moved back suiiiciently to bring its inclined face b3 clear of the lockingpiece A the pin, stud, or screw b will have reached the inclined face b3 on arm ba further back- Ward movement of the pull B causing the said pin to ride over or along said inclined face, and thereby impart to the breech-bolt A a partial revolution, thereby moving the lockingpiece A out of its recess A2 in the receiver and uncovering the latter, and the breech-chamber for the ejection of the empty shell and the introduction of a fresh cartridge. During these movements of the pull A the full-cock notch d will pass some distance back of the nose eof the scar E. The distance the full-cock notch e travels beyond the nose of the sear E is equal to the distance the pullbar B has to move in order to lock the breech for firing; hence when the pullbar B is moved forward again the curved face or incline b3 of the arm b2 will push the lockingpiece A laterally, a partial revolution being again imparted to the breech-bolt A, which movement takes place while the pin or stud b again travels along the incline a of slot a in the breeclnbolt, and as soon as said pin or stud has reached the Wider part of the slot IOO the breech will have been locked, the nose e of the sear E being then in engagement with the full-cock notch d. A pull upon the trigger D will release the straight pull-bar B, which under the stress of spring c will be thrown forward, and with it the firing-pin C, as well as the arm b2, which latter will move alongside the locking-piece A of the breechbolt, thus securely locking the latter against motion during firing.

Inasmuch as the breech-bolt is securely locked against lateral motion before and when the gun is fired, such firing may be effected automatically by providing means to hold the ynose e of the sear E out of the path of the full-cock notch d. To this end I employ a locking latch or lever f, pivoted to the trigger-guard F, and arranged to engage a shoulder d on the trigger to hold said trigger back, thereby depressing the nose e of the sear E against the stress of the sear-spring S and out of the way of the full-cock notch.

It is obvious that as soon as the lockingpiece A is moved out of the way bythe arm 192 to permit the firing-pin and pull-bar to move forward under the stress of the spring c the said pull-bar and firing-pin willbe thrown I forward and the gun discharged.

Having described my invention, what I claim isl. The combination, substantially as described, with the tubular breech bolt A of a breech-loading gun, provided with a longitudinal slot having at its rear end an inwardly-projecting inclined face or shoulder, of a longitudinally-movable pull-bar carrying a pin or stud that projects into the slot of the bolt, a iiring-pin and its actuating-spring contained within the breech-bolt, said firing-pin having its rear endv connected with the pullbar, an actuating-arm secured to and projecting from the forward end of the pull-bar and adapted toimpart to the breech-bolt a partial revolution, a sear adapted to engage a fullcock notch on the pull-bar, and a trigger in engagement with the sear, for the purpose specified.

f2. The combination, substantially as described, with the pull-bar B, provided with the full-cock notch, the sear adapted to engage said notch, and the trigger in engage ment with the sear, of a locking-lever pivoted to the trigger-guard and adapted to engagea locking notch or shoulder on thetr'igger to lock the same into position and hold the sear out of the path of the full-cock notch on the pull-bar, substantially as and for the purposes specified.

3. In a breech-loading gun, the combination, with the receiver, of a breech-bolt provided with the locking-rib A and with alongitudinal slot contracted at its rear end, said contracted portion of the slot having one of its lateral faces inclined, a firing-pin and its actuating-spring arranged within the bolt, a longitudinally-movable support for the bolt, to which support the rear end of the firingpin is secured, and a stud or pin projecting from the support into the slotof the bolt, for the purposes speciiied.

4. In a breech-loading gun, the combination, with the receiver, of a breech-bolt provided with the locking-rib A and witha lon gitudinal slot contracted at its rear end, said contracted portion of the slot having one of its lateral faces inclined, a firing-pin and its actuating-spring arranged within the bolt, a longitudinally-movable support for the bolt, to which support the rear end of the firingpin is secured, a stud or pin projecting from the support into the slot of the bolt, and a locking-arm provided with a laterally-inclined face secured to and projecting from the forward end of the bolt, for the purposes specified.

In testimony whereof I affix my signature in presence of two witnesses.

KOSTA R. MILOVANOVITCII-KOKA.

VVitne'sses OTTo SCHIFFER, CARL SCHMIDT. 

